Figure 18.

Metastases. (a) Photograph of resected ileal loops and exophitic masses originating from the bowel wall in a 68-year-old woman with a previous diagnosis of cutaneous melanoma who presented with small bowel occlusion. (b) Low-power photomicrograph (magnification ×4; haematoxylin–eosin stain) shows neoplastic infiltration of the outer layers of bowel wall (asterisk) with intact mucosal epithelium (arrowhead). (c) High-power photomicrograph (magnification ×400; haematoxylin–eosin stain) demonstrate proliferation of round anaplastic cells involving the muscularis propria (arrows).